ISSN:
1662-8985
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
We described a facile approach to controllably synthesize silver nanoparticles withvarious morphologies using N, N-dimethylformamide (DMF) in the presence of poly (vinylpyrrolidone) (PVP). Triangular/hexagonal nanoplates, chain-like nanoplate assemblies, andnanobelts could be selectively obtained. On the basis of the experimental results, the concentrationof poly (vinyl pyrrolidone) and AgNO3, reactive temperature and time were the vital factors todetermine the shape of final products. Reasonable mechanisms for the formation of silvernanoparticles with various morphologies were proposed. Fluorescence modulation of dyerhodamine B (RhB) and fluorescein (FI) in the presence of silver nanoparticles were studied.Addition of silver nanoparticles could produce fluorescence enhancement and show self-quenchingrelease of RhB, while the fluorescence intensity of FI decreased due to the presence of the silvernanoparticles. The effects of silver nanoparticles on the fluorescence properties of dyes weredependent on the competition between the local field enhancement and non-radiation energytransfer from the molecule to the metallic nanoparticles
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/41/transtech_doi~10.4028%252Fwww.scientific.net%252FAMR.47-50.920.pdf
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